The yearlong effort to overhaul the nation’s immigration laws, which had the support of President Obama, Republican leaders and much of American business and labor, was seriously imperiled on Thursday when Speaker John A. Boehner conceded that it was unlikely he could pass a bill.

His pronouncement, amid mounting resistance from conservatives, significantly narrowed the window for success this year and left it to Mr. Obama to win the trust of balking Republicans.

Mr. Boehner’s remarks came a week after he and other House Republican leaders offered a statement of principles intended to win support for the measure. But, he said, House Republicans are not prepared to move forward in partnership with a Democratic administration that they believe will not fairly and impartially carry out the laws they pass.

The Democrats’ plan to hold on to their narrow Senate majority goes by the name “Bannock Street project.” It runs through 10 states, includes a $60 million investment and requires more than 4,000 paid staff members. And the effort will need all of that — and perhaps more — to achieve its goal, which is nothing short of changing the character of the electorate in a midterm cycle.

The Democratic Senatorial Campaign Committee is preparing its largest and most data-driven ground game yet, relying on an aggressive combination of voter registration, get-out-the-vote and persuasion efforts.

They hope to make the 2014 midterm election more closely resemble a presidential election year, when more traditional Democratic constituencies — single women, minorities and young voters — turn out to vote in higher numbers, said Guy Cecil, the committee’s executive director.

... Even with new funding and tactical tools, the Democratic Senate campaigns face considerable challenges. The voting rates of core Democratic constituencies — blacks, Hispanics, unmarried women, younger voters — historically drop off considerably in midterm elections. According to data from the Voter Participation Center — a nonpartisan organization dedicated to increasing the share of historically underrepresented voting groups — the drop-off among these groups between 2008 and 2010 was nearly 21 million, going from roughly 61 million to 40 million.

... “The question is whether the party’s Obama-era volunteer base will replicate itself for a Mark Pryor or a Mary Landrieu or a Kay Hagan,” said Sasha Issenberg, author of “The Victory Lab: The Secret Science of Winning Campaigns,” referring to three vulnerable incumbent Democratic senators. ...

In many ways, the Democratic Senatorial Campaign Committee’s efforts are simply reflective of a broader shift in electoral politics toward a more data-reliant and empirical approach: The effectiveness of television ads — which experts agree reach a point of oversaturation near the end of campaigns — is difficult to measure, while improved data-modeling and analytic techniques allow campaigns to more closely target their ideal voters.

You know, maybe the Republicans should try being smarter for a change instead of ignorantly wasting time and momentum on obviously bad ideas like these "immigration principles." Maybe the Stupid Party should try to get over being stupid?